An event runs each night to send reminders to contract administrators about contract expiration dates...

According to the ServiceNow Hardware Asset Management overview document1, the lease contract expiration flow sends notifications to the contract administrator before a lease contract expires and helps them act on the leased assets to return the asset or extend the contract.

According to the ServiceNow Elite blog post on contract management2, when the contract.expiration event runs on the Contract [ast.contract] table each night, an email message is sent to the person identified as the contract administrator at the following times:

90 days ahead of the contract expiration date

60 days ahead of the contract expiration date

30 days ahead of the contract expiration date

Day of expiration

Therefore, the correct answer is C, D, E, and F.

References:

1: Hardware Asset Management overview - ServiceNow - Now Support

2: Contract and renewal management - ServiceNow

3: Contract Management — ServiceNow Elite

4: Email notification condition for contract expiration - ServiceNow